\sin \left({\left(\sqrt{\tan^{-1}_* \frac{b}{b}}\right)}^{\left(b - a\right)}\right)double f(double a, double b) {
double r8074 = b;
double r8075 = atan2(r8074, r8074);
double r8076 = sqrt(r8075);
double r8077 = a;
double r8078 = r8074 - r8077;
double r8079 = pow(r8076, r8078);
double r8080 = sin(r8079);
return r8080;
}